RL Circuits problems
- 1. When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle
Options- A. increases
- B. decreases
- C. is not affected
- D. cannot be determined Discuss
Correct Answer: increases
- 2. The phase angle (?) of a series RL circuit varies directly with frequency.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. A power factor of 1 indicates a purely reactive circuit, and a power factor of 0 indicates a purely resistive circuit.
Options- A. True
- B. False Discuss
Correct Answer: False
- 4. Total current in an RL circuit always lags the source voltage.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. In a lag network, the output voltage lags the input voltage in phase.
Options- A. True
- B. False Discuss
Correct Answer: True
- 6. The resistor voltage in an RL circuit is always out of phase with the current.
Options- A. True
- B. False Discuss
Correct Answer: False
- 7. A filter passes certain frequencies and rejects others.
Options- A. True
- B. False Discuss
Correct Answer: True
Explanation:
Filters that are designed to remove certain frequencies and allow others.
Band- pass filter - only frequencies in a frequency band are passed.
Notch filter - rejects just one specific frequency.
- 8. In an RL circuit, the impedance is determined by both the resistance and the inductive reactance combined.
Options- A. True
- B. False Discuss
Correct Answer: True
- 9. The power factor indicates how much of the apparent power is reactive power.
Options- A. True
- B. False Discuss
Correct Answer: False
- 10. The impedance of an RL circuit varies inversely with frequency.
Options- A. True
- B. False Discuss
Correct Answer: False
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